Upgrade Windows

Single- and even some double-pane clear-glass windows can force heating and cooling systems to work overtime. Energy Star-qualified windows with insulating glazes, gas fills, and better framing materials deliver the best results.

Moderate the Thermostat

Lower the thermostat by just two degrees this winter to conserve energy without sacrificing comfort. Turn it down 10 degrees at night and when you're not home -- or install a programmable thermostat for automatic adjustments.

Change Lightbulbs

Compact fluorescent lightbulbs consume a quarter of the electricity required by comparable incandescent bulbs and last up to 12 times longer. Maximize savings by changing at least five frequently used bulbs.

Unplug Electronics

Many household appliances continue to suck electricity even when switched off; nationally, this creates the annual emissions equivalent of 17 power plants. Minimize leaks by unplugging idle electronics.